using System;

​

public class Program

{

    public static void Main()

    {

        string myFirstName = "Ozzie";

        string myLastName = "Corbitt";

        Console.WriteLine("Hello NNC!"); 

        Console.WriteLine("My Name is "+ myFirstName + " " + myLastName + "."); 

        Console.WriteLine("My Name is {0} {1}.", myFirstName, myLastName);

        Console.WriteLine($"My Name is {myFirstName} {myLastName}.");

    }   

​

}